CN207160013U - One kind pours conduit from gravity - Google Patents
One kind pours conduit from gravity Download PDFInfo
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- CN207160013U CN207160013U CN201721130256.XU CN201721130256U CN207160013U CN 207160013 U CN207160013 U CN 207160013U CN 201721130256 U CN201721130256 U CN 201721130256U CN 207160013 U CN207160013 U CN 207160013U
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- conduit
- gravity
- hopper
- concrete
- pour
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Abstract
The utility model provides one kind and pours conduit from gravity, it is related to technical field of buildings, conduit should be poured from gravity to be included pouring hopper, draw valve module and direct current conduit tube component, the bottom for pouring hopper offers an indwelling mouth, direct current conduit tube component includes transition conduit and multiple connection straight tubes, multiple connection straight tube head and the tail connect and form a concrete path, concrete path is used to stretching into pile foundation hole and injecting concrete, one end of transition conduit is removably attachable to pour hopper and connected with indwelling mouth, connection straight tube positioned at concrete path one end is removably attachable to transition conduit away from the one end for pouring hopper, valve module is drawn to be connected to the bottom for pouring hopper, for being turned on and off indwelling mouth.Compared to prior art, one kind provided by the utility model from gravity pours conduit, and it is good to pour effect, convenient disassembly and can control concrete amount.
Description
Technical field
Technical field of buildings is the utility model is related to, conduit is poured from gravity in particular to one kind.
Background technology
In Bored Pile of Bridge construction, the construction method in conventional area is using manually or mechanically pore-forming, using common mixed
Solidifying native casting craft or underwater concreting technique completes Bored Pile of Bridge construction, and this construction method can solve commonly substantially
Matter construction problem.
If Bored Pile of Bridge depth is excessive, can not manually meet casting concrete under hole, if while soil property it is more loose
In the case of, casting concrete considerably increases the possibility of casualties under hole.Further, occur pouring conduit,
After the completion of pile foundation hole pore-forming operation, conduit will be poured and stretch into pile foundation hole, avoided artificial lower opening and pour operation.But through invention
Investigation is found, existing to pour that tremie placing effect is poor, and dismounting is inconvenient, and the dosage of uncontrollable casting concrete.
In view of this, design and manufacture one kind and pour that effect is good, convenient disassembly and can control concrete amount from gravity
Conduit is poured just to be particularly important.
Utility model content
The purpose of this utility model is to provide one kind and pours conduit from gravity, and it is good to pour effect, convenient disassembly and can
Control concrete amount.
The utility model is realized using following technical scheme.
One kind pours conduit from gravity, and for injecting concrete into pile foundation hole, pouring conduit from gravity includes pouring material
Bucket, valve module and direct current conduit tube component, the bottom for pouring hopper is drawn to offer an indwelling mouth, direct current conduit tube component includes transition
Pipe and multiple connection straight tubes, multiple connection straight tube head and the tail connect and form a concrete path, and concrete path is used to stretch into stake
In datum hole and concrete is injected, one end of transition conduit is removably attachable to pour hopper and connected with indwelling mouth, positioned at coagulation
The connection straight tube of native path one end is removably attachable to transition conduit away from the one end for pouring hopper, draws valve module to be connected to and pours
The bottom of hopper, for being turned on and off indwelling mouth.
Further, draw valve module to include flow-stopping plate and drawing part, chute, flow-stopping plate are offered on the internal perisporium of indwelling mouth
Stretch into indwelling mouth, and chute is stretched into and can be along slide in the both ends stretched of flow-stopping plate, to be turned on and off indwelling mouth, drawing part is solid
Surely flow-stopping plate is connected to, for pullling flow-stopping plate, so that flow-stopping plate is along slide.
Further, valve module is drawn also to include actuator, actuator is connected to drawing part, and there is actuator a driving to open
Close, actuator drives drawing part to move under the control of driving switch.
Further, direct current conduit tube component also includes the first sealing ring and the second sealing ring, and the first sealing ring was arranged on
Between crossing pipe and pouring hopper, so that transition conduit is with pouring hopper sealed connection；Second sealing ring is arranged on transition conduit with being connected
Between straight tube, so that transition conduit is tightly connected with being connected straight tube.
Further, direct current conduit tube component also includes multiple 3rd sealing rings, and each 3rd sealing ring is arranged on adjacent two
Between individual connection straight tube, so that two neighboring connection straight tube is tightly connected, the gas leakage phenomenon of leakage is avoided.
Further, the both ends of transition conduit have the first reverse plate respectively, and transition conduit passes through the first reverse plate and pouring material
Bucket is detachably connected, and transition conduit is detachably connected by the first reverse plate and the connection straight tube positioned at concrete path one end.
Further, it is provided with the second reverse plate between two neighboring connection straight tube, two neighboring connection straight tube passes through the
Two reverse plates are detachably connected.
Further, pour and multiple hangers are relatively set with the top of hopper, each hanger offers towing pad.
Further, pouring conduit from gravity also includes shunting frame, shunting frame be arranged on pour in hopper and with indwelling mouth
Relatively, for being shunted to the concrete for entering indwelling mouth.
One kind pours conduit from gravity, and for injecting concrete into pile foundation hole, pouring conduit from gravity includes pouring material
Bucket, valve module, support frame and direct current conduit tube component, the bottom for pouring hopper is drawn to offer an indwelling mouth, direct current conduit tube component
Including transition conduit and multiple connection straight tubes, multiple connection straight tube head and the tail are connected and form a concrete path, and concrete path is used
In stretching into pile foundation hole and injecting concrete, one end of transition conduit is removably attachable to pour hopper and connected with indwelling mouth,
Connection straight tube positioned at concrete path one end is removably attachable to transition conduit away from the one end for pouring hopper, draws valve module to connect
The bottom for pouring hopper is connected to, for being turned on and off indwelling mouth, transition conduit is arranged in support frame, and support frame is used to be erected at stake
On datum hole and support transition conduit.
The utility model has the advantages that：
One kind provided by the utility model pours conduit from gravity, offers indwelling mouth in the bottom for pouring hopper, will draw
Valve module is connected to the bottom for pouring hopper, for being turned on and off indwelling mouth.Multiple connection straight tube head and the tail are connected and formed
One concrete path, concrete path are used to stretch into pile foundation hole and inject concrete, and one end of transition conduit is detachably connected
In pouring hopper and being connected with indwelling mouth, it is remote that the connection straight tube positioned at concrete path one end is removably attachable to transition conduit
Pour one end of hopper.In use, will be inserted into after the completion of multiple connection straight tube assembly in pile foundation hole, it is then assembled again
Transition conduit installs backward pour and concrete is injected in hopper, by drawing valve module to pull open indwelling mouth, pouring material with pouring hopper
Concrete in bucket flows into concrete path by transition conduit by indwelling mouth and drops to pile foundation hole bottom, in the effect of gravity
Under, compacting process is completed in concrete self compaction, until pile foundation hole is filled up.It is provided by the utility model compared to prior art
One kind from gravity pours conduit, and it is good to pour effect, convenient disassembly and can control concrete amount.
Another kind provided by the utility model pours conduit from gravity, support frame is erected on pile foundation hole, transition conduit is worn
Located at support frame.Support frame is played a supporting role so that it is more convenient that conduit installation should be poured from gravity.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation that conduit is poured from gravity that the utility model first embodiment provides；
Fig. 2 is the attachment structure schematic diagram of direct current conduit tube component in Fig. 1；
Fig. 3 is the attachment structure schematic diagram that valve module is drawn in Fig. 1；
Fig. 4 is the attachment structure schematic diagram for the drawing valve module that the utility model second embodiment provides；
Fig. 5 is the structural representation that conduit is poured from gravity that the utility model 3rd embodiment provides.
Icon：100- pours conduit from gravity；110- pours hopper；130- draws valve module；131- flow-stopping plates；133- drawings
Part；135- actuators；150- direct current conduit tube components；151- transition conduits；153- connection straight tubes；The sealing rings of 155- first；157-
Two sealing rings；The sealing rings of 159- the 3rd；170- shunts frame；190- support frames.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " vertical ", " level ", " interior ",
The orientation or position relationship of instructions such as " outer " are or the utility model product based on orientation shown in the drawings or position relationship
The orientation or position relationship usually put during use, it is for only for ease of description the utility model and simplifies description, without referring to
Show or imply that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that referring to
Show or imply relative importance.
In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " connected ", " installation ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, intermediary can also be passed through
It is indirectly connected, can is the connection of two element internals.For the ordinary skill in the art, can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
Below in conjunction with the accompanying drawings, some embodiments of the present utility model are elaborated.In the case where not conflicting, under
Feature in the embodiment stated can be mutually combined.
First embodiment
With reference to referring to Fig. 1 to Fig. 2, present embodiments provide one kind and pour conduit 100 from gravity, for being noted into pile foundation hole
Enter concrete, conduit 100 should be poured from gravity to be included pouring hopper 110, draw valve module 130, direct current conduit tube component 150 and divide
Frame 170 is flowed, the bottom for pouring hopper 110 offers an indwelling mouth, and direct current conduit tube component 150 is removably attachable to pour hopper
110 and connected with indwelling mouth.Valve module 130 is drawn to be connected to the bottom for pouring hopper 110, for being turned on and off indwelling mouth.Point
Stream frame 170, which is arranged on, to be poured in hopper 110 and relative with indwelling mouth, for being shunted to the concrete for entering indwelling mouth.
Direct current conduit tube component 150 includes transition conduit 151, multiple connection straight tubes 153, the first sealing ring 155, the second sealing ring
157 and the 3rd sealing ring 159, multiple connection straight tubes 153 connect from beginning to end and form a concrete path, concrete path is used for
Stretch into pile foundation hole and inject concrete, one end of transition conduit 151 is removably attachable to pour hopper 110 and connected with indwelling mouth
Logical, the connection straight tube 153 positioned at concrete path one end is removably attachable to that transition conduit 151 is remote to pour the one of hopper 110
End.
Between first sealing ring 155 is arranged on transition conduit 151 and pours hopper 110, so that transition conduit 151 is with pouring hopper
110 the second sealing rings of sealed connection 157 are arranged between transition conduit 151 and connection straight tube 153, so that transition conduit 151 is with being connected
Straight tube 153 is tightly connected.Each 3rd sealing ring 159 is arranged between two neighboring connection straight tube 153, so that two neighboring company
Connect straight tube 153 to be tightly connected, avoid the gas leakage phenomenon of leakage.
In the present embodiment, each connection straight tube 153 is made with transition conduit 151 of Q235 steel plate clod washes, is had
Stronger tensile strength.It is worth noting that, connection straight tube 153 and the material of transition conduit 151 are not restricted to use herein
Q235 steel, other steel such as Q245R or Q345R can also be used, are not especially limited herein.
In the present embodiment, the first sealing ring 155, the second sealing ring 157 and the 3rd sealing ring 159 are rubber blanket
Circle, for preventing air and slurries from overflowing.It is worth noting that, the first sealing ring 155, the second sealing ring 157 and herein
Three sealing rings 159 are not restricted to rubber washer or metal washer or other macromolecule packing rings etc., as long as with good
The sealing ring of good sealing effectiveness is within the scope of protection of the utility model.
The both ends of transition conduit 151 have the first reverse plate respectively, and transition conduit 151 is by the first reverse plate and pours hopper
110 are detachably connected, and transition conduit 151 is detachable by the first reverse plate and the connection straight tube 153 positioned at concrete path one end
Connection.The second reverse plate is provided between two neighboring connection straight tube 153, two neighboring connection straight tube 153 reverses by second
Disk is detachably connected.
It is worth noting that, transition conduit 151 and pour herein between hopper 110, between two neighboring connection straight tube 153
It can be not especially limited herein by other connected modes such as flange connection or fast connector connection.
In the present embodiment, the top for pouring hopper 110 is relatively set with multiple hangers, and each hanger offers traction
Hole, so that pull rope passes through during lifting.Specifically, the number of hanger is three, and three hangers are pouring respectively in equilateral triangle
The top of hopper 110 is built, ensure that the stability of lifting.
Referring to Fig. 3, draw valve module 130 to include flow-stopping plate 131 and drawing part 133, cunning is offered on the internal perisporium of indwelling mouth
Groove, flow-stopping plate 131 stretch into indwelling mouth, and chute is stretched into and can be along slide, to be turned on and off in the both ends stretched of flow-stopping plate 131
Indwelling mouth, drawing part 133 are fixedly connected on flow-stopping plate 131, for pullling flow-stopping plate 131, so that flow-stopping plate 131 is slided along chute
It is dynamic.
In the present embodiment, baffle seam is offered on the periphery wall of indwelling mouth, flow-stopping plate 131 is extend into through baffle seam
In indwelling mouth.
In summary, present embodiments provide one kind and pour conduit 100 from gravity, opened up in the bottom for pouring hopper 110
There is indwelling mouth, flow-stopping plate 131 is extend into indwelling mouth, and drawing part 133 is fixedly connected with flow-stopping plate 131, by pulling open
Part 133 is pulled out to control the concrete poured in hopper 110 to flow into transition conduit 151.Multiple connection straight tubes 153 are connected into simultaneously shape from beginning to end
Into a concrete path, concrete path is used to stretch into pile foundation hole and injects concrete, and one end of transition conduit 151 is removably
It is connected to and pours hopper 110 and connected with indwelling mouth, the connection straight tube 153 positioned at concrete path one end is removably attachable to
Transition conduit 151 is away from the one end for pouring hopper 110.In use, will be inserted into after the completion of multiple connection assembly of straight tube 153
In pile foundation hole, then assembled transition conduit 151 and pour hopper 110 again, install it is backward pour injection concrete in hopper 110,
Flow-stopping plate 131 is pulled open by drawing part 133, so that transition conduit 151 connects with pouring hopper 110, pours the coagulation in hopper 110
Soil flows into concrete path by transition conduit 151 by indwelling mouth and drops to pile foundation hole bottom, under gravity, coagulation
Compacting process is completed in native self compaction, until pile foundation hole is filled up.Compared to prior art, a kind of deadweight provided by the utility model
Power pours conduit 100, and it is good to pour effect, convenient disassembly and can control concrete amount.
Second embodiment
Referring to Fig. 4, present embodiments provide one kind and pour conduit 100 from gravity, its basic structure and principle and caused
Technique effect is identical with first embodiment, and to briefly describe, the present embodiment part does not refer to part, refers in first embodiment
Corresponding contents.
In the present embodiment, valve module 130 is drawn to include flow-stopping plate 131, drawing part 133 and actuator 135, indwelling mouth
Offer chute on internal perisporium, flow-stopping plate 131 stretches into indwelling mouth, and chute is stretched into and can be along chute in the both ends stretched of flow-stopping plate 131
Slide, to be turned on and off indwelling mouth, drawing part 133 is fixedly connected on flow-stopping plate 131, for pullling flow-stopping plate 131, so that gear
Flowing plate 131 is along slide.Actuator 135 is connected to drawing part 133, and actuator 135 has a driving switch, actuator
135 drive drawing part 133 to move under the control of driving switch, avoid artificial drawing flow-stopping plate 131.Specifically, the driving
Part 135 is a motor.
In the present embodiment, baffle seam is offered on the periphery wall of indwelling mouth, flow-stopping plate 131 is extend into through baffle seam
In indwelling mouth.
One kind that the present embodiment provides pours conduit 100 from gravity, and under the driving of motor, drawing part 133 pulls out
Flow-stopping plate 131, the folding of indwelling mouth is realized, avoid artificial drawing, it is very time saving and energy saving.
3rd embodiment
Referring to Fig. 5, present embodiments provide one kind and pour conduit 100 from gravity, for injecting concrete into pile foundation hole,
Its basic structure is identical with first embodiment with principle and caused technique effect, and to briefly describe, the present embodiment part does not carry
And part, refer to corresponding contents in first embodiment.
Conduit 100 should be poured from gravity and pours conduit 100 including pouring hopper 110, drawing valve module 130, support from gravity
Frame 190 and direct current conduit tube component 150, the bottom for pouring hopper 110 offer an indwelling mouth.Direct current conduit tube component 150 includes
Transition conduit 151 and multiple connection straight tubes 153, multiple connection straight tubes 153 connect and form a concrete path from beginning to end, and concrete leads to
Road is used to stretch into pile foundation hole and injects concrete, and one end of transition conduit 151 is removably attachable to pour hopper 110 and with staying
Mouth connection is put, the connection straight tube 153 positioned at concrete path one end is removably attachable to transition conduit 151 away from pouring hopper
110 one end, valve module 130 is drawn to be connected to the bottom for pouring hopper 110, for being turned on and off indwelling mouth, transition conduit 151 is worn
Located at support frame 190, support frame 190 is used to be erected on pile foundation hole and support transition conduit 151.
In the present embodiment, support frame 190 is steel support frame 190, is horizontally set with the top of pile foundation hole, plays support and makees
With.
One kind that the present embodiment provides pours conduit 100 from gravity, support frame 190 is erected on pile foundation hole, transition conduit
151 are arranged in support frame 190.Support frame 190 is played a supporting role so that it is more convenient that the installation of conduit 100 should be poured from gravity.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (10)
1. one kind pours conduit from gravity, for injecting concrete into pile foundation hole, it is characterised in that described poured from gravity is led
Pipe includes pouring hopper, draws valve module and direct current conduit tube component, and the bottom for pouring hopper offers an indwelling mouth, described
Direct current conduit tube component includes transition conduit and multiple connection straight tubes, and multiple connection straight tube head and the tail, which connect and form a concrete, to be led to
Road, the concrete path are used to stretch into the pile foundation hole and inject the concrete, and one end of the transition conduit is detachable
Ground pours hopper and connected with the indwelling mouth described in being connected to, and the connection straight tube positioned at described concrete path one end can
The transition conduit is releasably connected to away from described one end for pouring hopper, the drawing valve module, which is connected to, described pours hopper
Bottom, for being turned on and off the indwelling mouth.
2. according to claim 1 pour conduit from gravity, it is characterised in that the drawing valve module includes flow-stopping plate and drawing
Part is pulled out, offers chute on the internal perisporium of the indwelling mouth, the flow-stopping plate stretches into the indwelling mouth, and the flow-stopping plate is stretched
Both ends stretch into the chute and can be along the slides, and to be turned on and off the indwelling mouth, the drawing part is fixedly connected
In the flow-stopping plate, for pullling the flow-stopping plate, so that the flow-stopping plate is along the slide.
3. according to claim 2 pour conduit from gravity, it is characterised in that the drawing valve module also includes actuator,
The actuator is connected to the drawing part, and the actuator has a driving switch, and the actuator is opened in the driving
The drawing part is driven to move under the control of pass.
4. according to claim 1 pour conduit from gravity, it is characterised in that the direct current conduit tube component also includes first
Sealing ring and the second sealing ring, first sealing ring be arranged on the transition conduit and it is described pour hopper between so that described
Transition conduit pours hopper sealed connection with described；Second sealing ring be arranged on the transition conduit with it is described connection straight tube it
Between, so that the transition conduit is tightly connected with the connection straight tube.
5. according to claim 4 pour conduit from gravity, it is characterised in that the direct current conduit tube component also includes multiple
3rd sealing ring, each 3rd sealing ring is arranged between the two neighboring connection straight tube, so that two neighboring described
Straight tube is connected to be tightly connected.
6. according to claim 1 pour conduit from gravity, it is characterised in that the both ends of the transition conduit have the respectively
One reverse plate, the transition conduit are detachably connected by first reverse plate and the hopper that pours, and the transition conduit passes through
First reverse plate is detachably connected with the connection straight tube positioned at described concrete path one end.
7. according to claim 6 pour conduit from gravity, it is characterised in that is set between the two neighboring connection straight tube
The second reverse plate is equipped with, the two neighboring connection straight tube is detachably connected by second reverse plate.
8. pour conduit from gravity according to claim any one of 1-7, it is characterised in that the top for pouring hopper
Multiple hangers are relatively set with, each hanger offers towing pad.
9. according to claim 1 pour conduit from gravity, it is characterised in that described to pour conduit also including dividing from gravity
Flow frame, the shunting frame be arranged on it is described pour it is in hopper and relative with the indwelling mouth, for entering the indwelling mouth
The concrete is shunted.
10. one kind pours conduit from gravity, for injecting concrete into pile foundation hole, it is characterised in that described to be poured from gravity
Conduit includes pouring hopper, draws valve module, support frame and direct current conduit tube component, the bottom for pouring hopper to offer one and stay
Mouth is put, the direct current conduit tube component includes transition conduit and multiple connection straight tubes, and multiple connection straight tube head and the tail are connected and formed
One concrete path, the concrete path are used to stretch into the pile foundation hole and inject the concrete, the transition conduit
One end pours hopper and connected with the indwelling mouth described in being removably attachable to, positioned at described in described concrete path one end
Connection straight tube is removably attachable to the transition conduit and is connected to described away from described one end for pouring hopper, the drawing valve module
The bottom of hopper is poured, for being turned on and off the indwelling mouth, the transition conduit is arranged in support frame as described above, support frame as described above
For being erected on the pile foundation hole and supporting the transition conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721130256.XU CN207160013U (en) | 2017-09-05 | 2017-09-05 | One kind pours conduit from gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721130256.XU CN207160013U (en) | 2017-09-05 | 2017-09-05 | One kind pours conduit from gravity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207160013U true CN207160013U (en) | 2018-03-30 |
Family
ID=61719802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721130256.XU Active CN207160013U (en) | 2017-09-05 | 2017-09-05 | One kind pours conduit from gravity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207160013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503032A (en) * | 2021-07-06 | 2021-10-15 | 五冶集团上海有限公司 | Double-sided superposed shear wall cavity concrete pouring tool |
-
2017
- 2017-09-05 CN CN201721130256.XU patent/CN207160013U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503032A (en) * | 2021-07-06 | 2021-10-15 | 五冶集团上海有限公司 | Double-sided superposed shear wall cavity concrete pouring tool |
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